.navbar-nav dropdowns can only be closed by tapping their .dropdown-toggle on touch devices

Created by: elstgav

On the mobile navbar, dropdowns are set to position: static to override the absolute position they normally have. However this prevents the dropdown from having a z-index. The z-index is necessary to ensure the dropdown's contents appear above the .dropdown-backdrop on mobile.

To fix, set the mobile dropdowns to position: relative;

  @media (max-width: @grid-float-breakpoint-max) {
    // Dropdowns get custom display when collapsed
    .open .dropdown-menu {
      position: relative;
      …
    }
  }